/*
 * Facebox (for jQuery)
 * version: 1.2 (05/05/2008)
 * @requires jQuery v1.2 or later
 *
 * Examples at http://famspam.com/facebox/
 *
 * Licensed under the MIT:
 *   http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright 2007, 2008 Chris Wanstrath [ chris@ozmm.org ]
 *
 * Usage:
 *  
 *  jQuery(document).ready(function() {
 *    jQuery('a[rel*=facebox]').facebox() 
 *  })
 *
 *  <a href="#terms" rel="facebox">Terms</a>
 *    Loads the #terms div in the box
 *
 *  <a href="terms.html" rel="facebox">Terms</a>
 *    Loads the terms.html page in the box
 *
 *  <a href="terms.png" rel="facebox">Terms</a>
 *    Loads the terms.png image in the box
 *
 *
 *  You can also use it programmatically:
 * 
 *    jQuery.facebox('some html')
 *
 *  The above will open a facebox with "some html" as the content.
 *    
 *    jQuery.facebox(function($) { 
 *      $.get('blah.html', function(data) { $.facebox(data) })
 *    })
 *
 *  The above will show a loading screen before the passed function is called,
 *  allowing for a better ajaxy experience.
 *
 *  The facebox function can also display an ajax page or image:
 *  
 *    jQuery.facebox({ ajax: 'remote.html' })
 *    jQuery.facebox({ image: 'dude.jpg' })
 *
 *  Want to close the facebox?  Trigger the 'close.facebox' document event:
 *
 *    jQuery(document).trigger('close.facebox')
 *
 *  Facebox also has a bunch of other hooks:
 *
 *    loading.facebox
 *    beforeReveal.facebox
 *    reveal.facebox (aliased as 'afterReveal.facebox')
 *    init.facebox
 *
 *  Simply bind a function to any of these hooks:
 *
 *   $(document).bind('reveal.facebox', function() { ...stuff to do after the facebox and contents are revealed... })
 *
 */
(function($) {
	
  var timeout = null;	
	
  $.facebox = function(data, klass) {    
      
    $.facebox.settings.title = data.title || 'iColdStyle';
    
    $.facebox.loading();

    if (data.ajax)               fillFaceboxFromAjax(data.ajax);
    else if (data.image)         fillFaceboxFromImage(data.image);
    else if (data.div)           fillFaceboxFromHref(data.div);
    else if ($.isFunction(data)) data.call($);
    else                         $.facebox.reveal(data, klass);
  }

  /*
   * Public, $.facebox methods
   */
  $.extend($.facebox, {
    settings: {
      opacity      : 0.6,
      overlay      : true,
      loadingImage : '../js/facebox/loading.gif',
      closeImage   : '../js/facebox/closelabel.png',
      imageTypes   : [ 'png', 'jpg', 'jpeg', 'gif' ],
      faceboxHtml  : '\
        <div id="facebox" style="display:none;"> \
          <div class="popup"> \
            <table> \
              <tbody> \
                <tr> \
                  <td class="tl"/><td class="b"/><td class="tr"/> \
                </tr> \
                <tr> \
                  <td class="bSide"/> \
                  <td class="body"> \
                    <div class="header"> \
                      <span class="title"></span> \
                      <a href="#" class="close"> \
                        X \
                      </a> \
                    </div> \
                    <div class="content"> \
                    </div> \
                  </td> \
                  <td class="bSide"/> \
                </tr> \
                <tr> \
                  <td class="bl"/><td class="b"/><td class="br"/> \
                </tr> \
              </tbody> \
            </table> \
          </div> \
        </div>'
    },

    loading: function() {      
      if( !$.facebox.title  ) // There's no title on the link.          
          $.facebox.setTitle( $.facebox.settings.title ); // Use title from settings.                    
      else
          $.facebox.setTitle( $.facebox.title );          // Use title from link.          
      
      init();
      if ($('#facebox .loading').length == 1) return true;
      showOverlay();

      $('#facebox .content').empty();
      $('#facebox .body').children().hide().end().
        append('<div class="loading"><img src="'+$.facebox.settings.loadingImage+'"/></div>');

      $this_box = $('#facebox').show();

      $(document).bind('keydown.facebox', function(e) {
        if (e.keyCode == 27) $.facebox.close();
        return true;
      })
      $(document).trigger('loading.facebox');
    },

    reveal: function(data, klass) {
    	
      $(document).trigger('beforeReveal.facebox');
      
      if (klass) $('#facebox .content').addClass(klass);
      $('#facebox .content').append(data);
      $('#facebox .loading').remove();
      $('#facebox .body').children().show();

      $(document).trigger('reveal.facebox').trigger('afterReveal.facebox');
      
      var 
      scroll_top = getPageScroll()[1],
      y_loc = (scroll_top + (getPageHeight() * .5)) - ( $this_box.height()*.5 );
      y_loc = ( y_loc < scroll_top ) ? scroll_top : y_loc;
      
      $this_box.css({
        top:	y_loc,
        left:	$(window).width() / 2 - ($('#facebox table').width() / 2)
      }).show();
    },

    close: function() {
      $(document).trigger('close.facebox');
      return false;
    },

    setTitle: function( title ) {        
      $('#facebox td.body>.header>.title').html( title );
      return false;
    }
  })

  /*
   * Public, $.fn methods
   */

  $.fn.facebox = function(settings) {
    init(settings)

    function clickHandler() {

      $.facebox.title = $( this ).attr( 'title' );
      
      $.facebox.loading(true);

      // support for rel="facebox.inline_popup" syntax, to add a class
      // also supports deprecated "facebox[.inline_popup]" syntax
      var klass = this.rel.match(/facebox\[?\.(\w+)\]?/);
      if (klass) klass = klass[1];

      fillFaceboxFromHref(this.href, klass);
      // trigger the Content View activity
      var library_item_id=$(this).attr('data-library_item_id');
      /*
      if(typeof library_item_id!='undefined'){
	      $.ajax( {
				url : '/activity/trigger-content-view',
				type : 'POST',
				data : {activity:'cv',library_item_id:library_item_id},
				dataType : "json"
			});
      }
	  */
	      
	  return false;
      }

    return this.click(clickHandler);
  }

  /*
   * Private methods
   */

  // called one time to setup facebox on this page
  function init(settings) {
  
    if ($.facebox.settings.inited) return true
    else $.facebox.settings.inited = true

    $(document).trigger('init.facebox');
    makeCompatible();

    var imageTypes = $.facebox.settings.imageTypes.join('|')
    $.facebox.settings.imageTypesRegexp = new RegExp('\\.(' + imageTypes + ')', 'i')

    if (settings) $.extend($.facebox.settings, settings)
    $('body').append($.facebox.settings.faceboxHtml)

    var preload = [ new Image(), new Image() ]
    preload[0].src = $.facebox.settings.closeImage
    preload[1].src = $.facebox.settings.loadingImage

    $('#facebox').find('.b:first, .bl, .br, .tl, .tr').each(function() {
      preload.push(new Image())
      if($(this).css('background-image')) preload.slice(-1).src = $(this).css('background-image').replace(/url\((.+)\)/, '$1')
    })

    $('#facebox .close').click($.facebox.close)
    $('#facebox .close_image').attr('src', $.facebox.settings.closeImage);
    
  }
  
  
  // getPageScroll() by quirksmode.com
  function getPageScroll() {
    var xScroll, yScroll;
    if (self.pageYOffset) {
      yScroll = self.pageYOffset;
      xScroll = self.pageXOffset;
    } else if (document.documentElement && document.documentElement.scrollTop) {	 // Explorer 6 Strict
      yScroll = document.documentElement.scrollTop;
      xScroll = document.documentElement.scrollLeft;
    } else if (document.body) {// all other Explorers
      yScroll = document.body.scrollTop;
      xScroll = document.body.scrollLeft;	
    }
    return new Array(xScroll,yScroll) 
  }

  // Adapted from getPageSize() by quirksmode.com
  function getPageHeight() {
    var windowHeight
    if (self.innerHeight) {	// all except Explorer
      windowHeight = self.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
      windowHeight = document.documentElement.clientHeight;
    } else if (document.body) { // other Explorers
      windowHeight = document.body.clientHeight;
    }	
    return windowHeight
  }

  // Backwards compatibility
  function makeCompatible() {
    var $s = $.facebox.settings

    $s.loadingImage = $s.loading_image || $s.loadingImage
    $s.closeImage = $s.close_image || $s.closeImage
    $s.imageTypes = $s.image_types || $s.imageTypes
    $s.faceboxHtml = $s.facebox_html || $s.faceboxHtml
  }

  // Figures out what you want to display and displays it
  // formats are:
  //     div: #id
  //   image: blah.extension
  //    ajax: anything else
  function fillFaceboxFromHref(href, klass) {
    // div
    if (href.match(/#/)) {
      var url    = window.location.href.split('#')[0]
      var target = href.replace(url,'')
      $.facebox.reveal($(target).clone().show(), klass)

    // image
    } else if (href.match($.facebox.settings.imageTypesRegexp)) {
      fillFaceboxFromImage(href, klass)
    // ajax
    } else {
      fillFaceboxFromAjax(href, klass)
    }
  }

  function fillFaceboxFromImage(href, klass) {
    var image = new Image()
    image.onload = function() {
      if(image.width){
 
      	$.facebox.reveal('<div class="image" style="width: '+image.width+'px; height: '+image.height+'px" ><img src="' + image.src + '" /></div>', klass)
      
      }else{

	$.facebox.reveal('<div class="image"><img src="' + image.src + '" /></div>', klass)

      }

    }
    image.src = href
  }

  function fillFaceboxFromAjax(href, klass) {
    $.get(href, function(data) { $.facebox.reveal(data, klass) })
  }

  function skipOverlay() {
    return $.facebox.settings.overlay == false || $.facebox.settings.opacity === null 
  }

  function showOverlay() {
    if (skipOverlay()) return

    if ($('facebox_overlay').length == 0) 
      $("body").append('<div id="facebox_overlay" class="facebox_hide"></div>')

    $('#facebox_overlay').hide().addClass("facebox_overlayBG")
      .css('opacity', $.facebox.settings.opacity)
      .click(function(e) { $(document).trigger('close.facebox');
              e.stopPropagation(); // Stop event bubbling so other code doesn't receive the click event.
          })
      .fadeIn(200);
    
    
    return false
  }

  function hideOverlay() {
    if (skipOverlay()) return

    $('#facebox_overlay').fadeOut(200, function(){
      $("#facebox_overlay").removeClass("facebox_overlayBG")
      $("#facebox_overlay").addClass("facebox_hide") 
      $("#facebox_overlay").remove()
    })
    
    
    return false
  }

  /*
   * Bindings
   */

  $(document).bind('close.facebox', function() {
  
    $(document).unbind('keydown.facebox')
  
//    $('#facebox').fadeOut(function() {
      $('#facebox').hide();
      $('#facebox .content').removeClass().addClass('content')
      hideOverlay()
      $('#facebox .loading').remove()
//    })
  })

})(jQuery);
